debateable. He is one of the best but you could argue for a few other fighters. If he actually tried there would be absolutely no disputing it, he'd be far and away the best, not only in the LW division but potentially all of MMA.

funny how you don't mention any names, though. and we were talking LW GOAT here, not all of MMA.

the guy in his prime was a killer. despite having 8 losses on his record, only 3 were at lightweight, and one was a controversial decision and arguably when he was past his prime (whether it was or not, i don't really care.) BJ Penn is pretty easily the best ever at LW currently, and it's not really all that close.

seriously, who is first if not for BJ? Gomi? i mean... there's no one else.